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The Beishan landslide is an large-scale landslide situated on the northern bank of the Bailong River in western China. The engineering geological condition and characteristics of the Beishan landslide were identified based on UAV oblique photography and field investigation. The landslide has shown signs of reactivation since the 1970s and continues to experience ongoing deformation in recent years. It is very likely to produce a debris avalanche. Numerical simulation was conducted to predict run-out and motion by DAN3D for hazard assessment. The results indicate that the Beishan landslide could turn into a rapid avalanche with a run-out distance of 1600m. The accumulation would cover half of the Lijie Town at the foot of the slope, potentially resulting in significant casualties and property loss.

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Run-Out Prediction of a Large-Scale Landslide Based on Numerical Simulation

  • 会议论文

  • 发表日期：

    2025年

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  • Zhuoya Liu,
  • Qiang Fan,
  • Jiasheng Chen,
  • Yuanyuan Zhao,
  • Chen Chen

摘要

The Beishan landslide is an large-scale landslide situated on the northern bank of the Bailong River in western China. The engineering geological condition and characteristics of the Beishan landslide were identified based on UAV oblique photography and field investigation. The landslide has shown signs of reactivation since the 1970s and continues to experience ongoing deformation in recent years. It is very likely to produce a debris avalanche. Numerical simulation was conducted to predict run-out and motion by DAN3D for hazard assessment. The results indicate that the Beishan landslide could turn into a rapid avalanche with a run-out distance of 1600m. The accumulation would cover half of the Lijie Town at the foot of the slope, potentially resulting in significant casualties and property loss.